US3841792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine blade lock and seal device
Assignee: Westinghouse Electric Corp
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Filing: 1973-03-09
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Granted: 1974-10-15
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Expires: 1993-03-09
Abstract
Abstract This invention comprises a combined structure for locking blades to the rotor disk of a turbomachine and for preventing fluid from leaking between the rotor disk and an inner shroud ring of adjacent stationary vanes during turbomachine operation.
Inventors
- 👤 D Amos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:56
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/32; F01D5/326; F01D11/00; F01D11/001; F01D5/3007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
A turbomachine assembly having at least one rotatable disc member having a plurality of generally axially disposed grooves therein, a plurality of radial blades having root portions engaged on said grooves, an annular array of stationary radially directed vanes on each side of said disc, each of said stationary arrays of vanes including a shroud joining the radially inner ends of the vanes, and a locking and sealing member associated with each of said radial blades, each locking and sealing member being disposed longitudinally within one of said generally axially disposed grooves between said groove and said blade root, and engaging the blade root disposed therein by a pin member biasedly registered therebetween to lock the blade in its axial position with respect to said locking and sealing member, and each locking and sealing member having portions extending on each side of the disc adapted to secure said locking and sealing member axially in said groove and to form a seal with the adjacent shroud.
Claim 2
Dependent Claim
165 words
A turbomachine assembly having at least one rotatable disc member having a plurality of generally axially disposed grooves therein, a plurality of radial blades having root portions engaged on said grooves, an annular array of stationary radially directed vanes on each side of said disc, each of said stationary arrays of vanes including a shroud joining the radially inner ends of the vanes, and a locking and sealing member associated with each of said radial blades, each locking and sealing member being disposed longitudinally within one of said generally axially disposed grooves between said groove and said blade root, and engaging the blade root disposed therein by a pin member biasedly registered therebetween to lock the blade in its axial position with respect to said locking and sealing member, and each locking and sealing member having portions extending on each side of the disc adapted to secure said locking and sealing member axially in said groove and to form a seal with the adjacent shroud.
Claim 3
Dependent Claim
48 words
The combination as recited in claim 1, wherein each of said root portions of said radial blades has an axially extending slot and an indentation in said slot, said indentation receiving said biased pin member, said axially extending slot permitting disposition of said locking and sealing member therein.
Claim 4
Dependent Claim
73 words
The combination as recited in claim 1, wherein said locking and sealing member comprises a strip of material disposed throughout said groove and extending beyond both sides of said disc, said strip of material having a hole therethrough, a bias producing means, and a radially movable pin attached to said bias producing means, said pin registering through said hole and forcibly held in interlocking engagement with said indentation by said bias producing means.
Claim 5
Dependent Claim
26 words
The combination as recited in claim 3, wherein said strip of material disposed in said groove is in a locked relationship with respect to said disc.
Claim 6
Dependent Claim
15 words
The combination as recited in claim 3, wherein said bias producing means is a spring.
Claim 7
Dependent Claim
50 words
The combination as recited in claim 3, wherein said portion of material extending beyond said disc is arranged to form at least one trough-shaped segment on each side of and abutting said disc, wherein at least one outer radially directed flange of said trough forms a seal with said shroud.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |